Rolled roofing materials. Advantages, disadvantages, principal

Roofing materials widely used in constructing roof. Roofing is one of the most inexpensive and simple manufacturing technology. Despite the relative cheapness, with all the technology four layer coating of roofing material will serve the same as a metal roof of galvanized steel. However, the roof of roofing material has one drawback-flammable.

Roofing materials Are stacked in several layers, each of which carries a specific function. The bottom layer is uncoated materials (lining) and the top-cover. The main feature of the coating material-is the presence of a layer containing a grit (pulverized, fine-grained or coarse-grained) and refractory bitumen.

The Most commonly used roofing materials – asphalt, roofing and roofing felt. They are very simple to fit. They are used on roofs with a slight slope for solid ground.

One of the main properties of soft roofing materials - water-resistant. This property is saved only with the full integrity of the material, that is, in the absence of fractures and cracks.

To the roof was high-quality and durable roofing materials Must meet the following criteria:

• Tensile strength (material torn into strips at 5cm, and the more effort we use, the stronger the material).
• Resistance of the material to heat;
• The flexibility of the material is evaluated by the lowest temperature at which no cracks appear at the bend on the rod.

Roofing materials. Types

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Depending on the Foundation, roofing materials Are of the following types:

• Construction fabric – the basic and unbonded;
• The type of the components of the coating composition-polymer, bitumen, bitumen-polymer;
• Mind warp – cardboard, asbestos, fiberglass, polymer and composite;
• The structure of the protective layer – with the foil or sheet, flake, pulverized, coarse-grained, fine-grained.

Also, depending on the binder components, they can be polymer modified asphalt or bitumen.

Asphalt roofing materials have a low price and lower quality, sravneniyu with polymer-bitumen. The disadvantage is the low level of frost resistance. However, this material is often used for internal waterproofing of the structure, due to water resistance.

Polymer-bitumen roofing rolled materials have much more advantages than the previous one. However, their price is higher. They have a high degree of strength and durability, resistant to very low and high temperatures. These qualities are crucial when selecting a roofing materials for the harsh climatic conditions of our country. These materials can last for about 25 years in the technology of manufacturing and the laying of the roof.

With a sufficient range of roofing materials bitumen-polymer roll is a new modern word in the roofing. However, when you have to prioritize and decide what is more important to you: price or quality?